Adjustable sheet-metal pipe.



No 818,267. v PATENT ED APR, 17, 1906. H. LATIMER.

ADJUSTABLE SHEET METAL PIPE.

APPLIOATIbN FILED APR.18, 1905'.

WITNESSES. UVVf/VTOR yg} Mrylafiwzer HARRY LATIMER, OF HIGH BRIDGE, NEW JERSEY.

ADJUSTABLE SHEET-METAL PEPE.

Specification of Letters Patent.

fatented. April 17, 1906.

Application filed April 18, 1906. Serial No. 256,200.

To all whom it may concern:

Be it known that I, HARRY LATIMER, a citizen of the United States, and a resident of High Bridge, in the county of Hunterdon and State of New Jersey, have invented a new and Improved Adjustable Sheet-Metal Pipe, of which the following is a full, clear, andexact description.

In the erection of sheet-metal piping, such as stovepipes, considerable di'l'iiculty is experienced in forming the joints between the sections, as these joints should fit with nicety though the pipe-sections vary in dimension.

The object of this invention is to produce a form of pipe which iseasily adjusted at its extremities to fit the adjacent sections.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

Figure 1 is an elevation showing a stovepipe constructed according to my invention. Fig. 2 is a perspective view showing the adjusting arrangementfor the large end of the pipe section. Fig- 3 is a developed plan showing a portion of one edge of the pipe at which the side seam is to be formed; and Fig. 4 is a view similar to Fig. 3, but representing the opposite edge in the act of being set into position to form the side seam.

Referring more particularly to the parts, 1 represents a stovepipe-section constructed according to my invention, the same being represented as connecting the pipe-sections 2 and 3. The pipe-section 1, when constructed according to my invention consists, substantially, of the usual 0 lindrical sleeve, the opposite longitudinal e ges whereof meet to form a longitudinal seam 1. In order to form this seam 4, one of the longitudinal edges 5 is folded to form a crease 5 and so as to present two plies, laps, or folds 6 and 7 at the edge, forming spaces between the same and between the pipe-body and the ply 7, as indicated. Into the space between the plies 6 and 7 the opposite longitudinal edge 8 of the sleeve is thrust, as indicated in Fig. 2.

In Fig. 3 the formation of the innermost ply 6 is fully illustrated. The edge of this ply is not plain in the manner usually found in stovepipes, but is serrated or scalloped, as indicated, so as to form a plurality of lobes 9, separated by recesses 10, which vary in depth progressively, as indicated by the dotted lines 11. Commencing near the small end of the st'ovepipe-section, they reach a minimum j depth at the point 12,

they become deeper again. tire length of the Stovepipe-section is formed with a'serrated edge, and the serrations are of a sufficient number so that the deepening of the recesses is repeated several times in the complete length of the pipe. Thus there is a succession of these rising-and-falling notches. From this arrangement if a pipesection of standard length iscut to a shorter length this length may have its small extremity adjusted to form a joint in the same manner as the standard length. Atth'elarge extremity of the pipe the crease 5 is cutaway so as to form a recessor slot5 as indicated most clearly in Fig. 2. i 4

In forming the joint at the large end of the stovepipesection 1 the edge 8 is simply thrust into the space between the plies 6'and 7, as suggested above, and is heldln position there by means of a locking plate or clip'13. (Shown most clearly in Fig. 2.) This plate is riveted to the stovepipe-section at 14'and and conforms to the curve of the pipefas shown, extending in the direction of the seam 4. Its inner edge is provided with a plurality of recesses'or notches 1 5, and these are adapted to engage the inner extremity 'of the slot 5 between the edge 5 and the ply' 7, in this way locking the edges of the seam together. In making the joint in this manner the longitudinal edges are brought together in a longitudinally-displaced position and then slid one upon the other until the plate 13 engages the extremity of the slot 5 As any one of the notches 15 may engage the'seam, the diameter of this end of the pipe may be adjusted to a larger or smaller dimension, as desired.

Arranging the edge of the lap 6 in a succession of progressively-deepening notches enables the diameter of the small extremity of the pipe-section 1 to be nicely adjusted. The manner in which the joint is formed at this oint is clearly illustrated in Fig. 4. The edge 8 throughout its principal portion lies in the space under the lap 6, as illustrated in Fig. 2. At some notch, such as the notch 16, the edge 8 passes to the other side of the ply 6, passing through the notch 16, as will be readily understood. This arrangement brings about a certain diameter at the extremity 17 of the pipe-section. If this diameter were not found suitable for connection with the pipesection3, the notch 18 could be selected or the notch 19. The former notch would beyond which point In this way en-v give an increased diameter at the extremity of the pipe, while the latter would give a reduced diameter. Thus it will be seen that by selecting the proper notch a very accurate adjustment of the pipe-section may be made with respect to the lpe-section 3.

It should now 0 early appear that with Stovepipe-sections constructed according to this invention a stovepipe may be readily set up and the joints accurately made. This is an advantageous feature of the invention, as in present ractice, although it is attempted to standarc izepi es, they vary sufficientlyto render it diilicu t to fit all sizes made or in of the p1pe-section.

2. A pipe-section consisting of a sleeve having longitudinal edges adapted to come together to form a lapped seam, one of said edges having a succession of recesses of proressively-increasing depth, said recesses beng adapted to receive an opposite edge and determining the diameter of said pi e-section.

3. A pipe-section consisting o a sleeve having longitudinal edges adapted to overlap v to form a seam, one of said edges being folded so as to form an inner ply and a groove adj acent thereto, said groove being adapted to receive the opposite edge, said inner ply having a serrated edge presenting a plurality of recesses of progressively increasing and decreasing depth, said recesses being adapted to receive the said opposite edge of said sleeve near the extremity of said pipe-section to determine the diameter thereof.

4. A stovepipe section consisting of a sleeve having extremities of different diameters, the small extremity of said sleeve having notches in a longitudinal edge thereof, said notches rogressively increasing in depth and being adapted to receive the opposite longitudinal edge to determine the diameter of the small extremity of said pipe-section, and means for adjustably lOCkIII the said edges at the other extremity of said pipe-section.

5. A Stovepipe-sleeve having a longitudinal edge thereof folded to form a crease and a groove adjacent to said crease, said groove being ada ted to receive the o posite longitudinal edge and said crease liaving a slot formed therein at the extremity of said sleeve, and a locking-plate rigidly attached at said 0 posite edge and received in said slot, said ocking-plate having a plurality of notches in theedge thereof adapted to enage the end of said slot, and affording means or adjusting the diameter of said sleeve.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses. Y

HARRY LATIMER.

Witnesses ABRAM L. BEAVERS, FREDERICK T. CRAMER. 

